We need to research rounding changes in `NET Core 3.0` described in this article: https://devblogs.microsoft.com/dotnet/floating-point-parsing-and-formatting-improvements-in-net-core-3-0/

These changes led to failed tests like here https://github.com/mongodb/mongo-csharp-driver/blob/master/tests/MongoDB.Bson.Tests/Serialization/Serializers/NetPrimitiveSerializerTests.cs#L1135 (that are currently disabled for NET Core 3.0)